3 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
6 /* ====================================================================
7 * Copyright (c) 1999 The OpenSSL Project. All rights reserved.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in
18 * the documentation and/or other materials provided with the
21 * 3. All advertising materials mentioning features or use of this
22 * software must display the following acknowledgment:
23 * "This product includes software developed by the OpenSSL Project
24 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
26 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
27 * endorse or promote products derived from this software without
28 * prior written permission. For written permission, please contact
29 * licensing@OpenSSL.org.
31 * 5. Products derived from this software may not be called "OpenSSL"
32 * nor may "OpenSSL" appear in their names without prior written
33 * permission of the OpenSSL Project.
35 * 6. Redistributions of any form whatsoever must retain the following
37 * "This product includes software developed by the OpenSSL Project
38 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
40 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
41 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
43 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
44 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
45 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
46 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
47 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
49 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
50 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
51 * OF THE POSSIBILITY OF SUCH DAMAGE.
52 * ====================================================================
54 * This product includes cryptographic software written by Eric Young
55 * (eay@cryptsoft.com). This product includes software written by Tim
56 * Hudson (tjh@cryptsoft.com).
62 #include <openssl/x509v3.h>
64 static int tr_cmp(const X509_TRUST *const *a, const X509_TRUST *const *b);
65 static void trtable_free(X509_TRUST *p);
67 static int trust_1oidany(X509_TRUST *trust, X509 *x, int flags);
68 static int trust_1oid(X509_TRUST *trust, X509 *x, int flags);
69 static int trust_compat(X509_TRUST *trust, X509 *x, int flags);
71 static int obj_trust(int id, X509 *x, int flags);
72 static int (*default_trust) (int id, X509 *x, int flags) = obj_trust;
75 * WARNING: the following table should be kept in order of trust and without
76 * any gaps so we can just subtract the minimum trust value to get an index
80 static X509_TRUST trstandard[] = {
81 {X509_TRUST_COMPAT, 0, trust_compat, "compatible", 0, NULL},
82 {X509_TRUST_SSL_CLIENT, 0, trust_1oidany, "SSL Client", NID_client_auth,
84 {X509_TRUST_SSL_SERVER, 0, trust_1oidany, "SSL Server", NID_server_auth,
86 {X509_TRUST_EMAIL, 0, trust_1oidany, "S/MIME email", NID_email_protect,
88 {X509_TRUST_OBJECT_SIGN, 0, trust_1oidany, "Object Signer", NID_code_sign,
90 {X509_TRUST_OCSP_SIGN, 0, trust_1oid, "OCSP responder", NID_OCSP_sign,
92 {X509_TRUST_OCSP_REQUEST, 0, trust_1oid, "OCSP request", NID_ad_OCSP,
94 {X509_TRUST_TSA, 0, trust_1oidany, "TSA server", NID_time_stamp, NULL}
97 #define X509_TRUST_COUNT (sizeof(trstandard)/sizeof(X509_TRUST))
99 IMPLEMENT_STACK_OF(X509_TRUST)
101 static STACK_OF(X509_TRUST) *trtable = NULL;
103 static int tr_cmp(const X509_TRUST *const *a, const X509_TRUST *const *b)
105 return (*a)->trust - (*b)->trust;
108 int (*X509_TRUST_set_default(int (*trust) (int, X509 *, int))) (int, X509 *,
110 int (*oldtrust) (int, X509 *, int);
111 oldtrust = default_trust;
112 default_trust = trust;
116 int X509_check_trust(X509 *x, int id, int flags)
122 /* We get this as a default value */
125 rv = obj_trust(NID_anyExtendedKeyUsage, x, 0);
126 if (rv != X509_TRUST_UNTRUSTED)
128 return trust_compat(NULL, x, 0);
130 idx = X509_TRUST_get_by_id(id);
132 return default_trust(id, x, flags);
133 pt = X509_TRUST_get0(idx);
134 return pt->check_trust(pt, x, flags);
137 int X509_TRUST_get_count(void)
140 return X509_TRUST_COUNT;
141 return sk_X509_TRUST_num(trtable) + X509_TRUST_COUNT;
144 X509_TRUST *X509_TRUST_get0(int idx)
148 if (idx < (int)X509_TRUST_COUNT)
149 return trstandard + idx;
150 return sk_X509_TRUST_value(trtable, idx - X509_TRUST_COUNT);
153 int X509_TRUST_get_by_id(int id)
157 if ((id >= X509_TRUST_MIN) && (id <= X509_TRUST_MAX))
158 return id - X509_TRUST_MIN;
162 idx = sk_X509_TRUST_find(trtable, &tmp);
165 return idx + X509_TRUST_COUNT;
168 int X509_TRUST_set(int *t, int trust)
170 if (X509_TRUST_get_by_id(trust) == -1) {
171 X509err(X509_F_X509_TRUST_SET, X509_R_INVALID_TRUST);
178 int X509_TRUST_add(int id, int flags, int (*ck) (X509_TRUST *, X509 *, int),
179 char *name, int arg1, void *arg2)
184 * This is set according to what we change: application can't set it
186 flags &= ~X509_TRUST_DYNAMIC;
187 /* This will always be set for application modified trust entries */
188 flags |= X509_TRUST_DYNAMIC_NAME;
189 /* Get existing entry if any */
190 idx = X509_TRUST_get_by_id(id);
191 /* Need a new entry */
193 if (!(trtmp = OPENSSL_malloc(sizeof(X509_TRUST)))) {
194 X509err(X509_F_X509_TRUST_ADD, ERR_R_MALLOC_FAILURE);
197 trtmp->flags = X509_TRUST_DYNAMIC;
199 trtmp = X509_TRUST_get0(idx);
201 /* OPENSSL_free existing name if dynamic */
202 if (trtmp->flags & X509_TRUST_DYNAMIC_NAME)
203 OPENSSL_free(trtmp->name);
204 /* dup supplied name */
205 if (!(trtmp->name = BUF_strdup(name))) {
206 X509err(X509_F_X509_TRUST_ADD, ERR_R_MALLOC_FAILURE);
209 /* Keep the dynamic flag of existing entry */
210 trtmp->flags &= X509_TRUST_DYNAMIC;
211 /* Set all other flags */
212 trtmp->flags |= flags;
215 trtmp->check_trust = ck;
219 /* If its a new entry manage the dynamic table */
221 if (!trtable && !(trtable = sk_X509_TRUST_new(tr_cmp))) {
222 X509err(X509_F_X509_TRUST_ADD, ERR_R_MALLOC_FAILURE);
225 if (!sk_X509_TRUST_push(trtable, trtmp)) {
226 X509err(X509_F_X509_TRUST_ADD, ERR_R_MALLOC_FAILURE);
233 static void trtable_free(X509_TRUST *p)
237 if (p->flags & X509_TRUST_DYNAMIC) {
238 if (p->flags & X509_TRUST_DYNAMIC_NAME)
239 OPENSSL_free(p->name);
244 void X509_TRUST_cleanup(void)
247 for (i = 0; i < X509_TRUST_COUNT; i++)
248 trtable_free(trstandard + i);
249 sk_X509_TRUST_pop_free(trtable, trtable_free);
253 int X509_TRUST_get_flags(X509_TRUST *xp)
258 char *X509_TRUST_get0_name(X509_TRUST *xp)
263 int X509_TRUST_get_trust(X509_TRUST *xp)
268 static int trust_1oidany(X509_TRUST *trust, X509 *x, int flags)
270 if (x->aux && (x->aux->trust || x->aux->reject))
271 return obj_trust(trust->arg1, x, flags);
273 * we don't have any trust settings: for compatibility we return trusted
274 * if it is self signed
276 return trust_compat(trust, x, flags);
279 static int trust_1oid(X509_TRUST *trust, X509 *x, int flags)
282 return obj_trust(trust->arg1, x, flags);
283 return X509_TRUST_UNTRUSTED;
286 static int trust_compat(X509_TRUST *trust, X509 *x, int flags)
288 X509_check_purpose(x, -1, 0);
289 if (x->ex_flags & EXFLAG_SS)
290 return X509_TRUST_TRUSTED;
292 return X509_TRUST_UNTRUSTED;
295 static int obj_trust(int id, X509 *x, int flags)
302 return X509_TRUST_UNTRUSTED;
304 for (i = 0; i < sk_ASN1_OBJECT_num(ax->reject); i++) {
305 obj = sk_ASN1_OBJECT_value(ax->reject, i);
306 if (OBJ_obj2nid(obj) == id)
307 return X509_TRUST_REJECTED;
311 for (i = 0; i < sk_ASN1_OBJECT_num(ax->trust); i++) {
312 obj = sk_ASN1_OBJECT_value(ax->trust, i);
313 if (OBJ_obj2nid(obj) == id)
314 return X509_TRUST_TRUSTED;
317 return X509_TRUST_UNTRUSTED;